diff --git a/.github/workflows/build_and_test.yml b/.github/workflows/build_and_test.yml
index 26344d7..8034ae4 100644
--- a/.github/workflows/build_and_test.yml
+++ b/.github/workflows/build_and_test.yml
@@ -79,7 +79,7 @@ jobs:
       shell: bash
       run: |
         ./.github/workflows/build-test nomypy numpyfix
-    - uses: actions/upload-artifact@v3
+    - uses: actions/upload-artifact@v4
       if: github.event_name == 'release' || contains(github.ref, 'refs/heads/wheel')
       with:
         name: artefacts
@@ -101,7 +101,7 @@ jobs:
     runs-on: ubuntu-22.04
     steps:
     - name: Download all wheels
-      uses: actions/download-artifact@v3
+      uses: actions/download-artifact@v4
       with:
         path: wheelhouse
     - name: Put them all in the dist folder
@@ -129,7 +129,7 @@ jobs:
       with:
         python-version: '3.10'
     - name: Download all wheels
-      uses: actions/download-artifact@v3
+      uses: actions/download-artifact@v4
       with:
         path: wheelhouse
     - name: Install pip, wheel
diff --git a/.github/workflows/docs.yml b/.github/workflows/docs.yml
index 09baab9..e90bee6 100644
--- a/.github/workflows/docs.yml
+++ b/.github/workflows/docs.yml
@@ -30,7 +30,7 @@ jobs:
         cd .github/workflows/docs
         mkdir extensions
         ./build-docs -d ${GITHUB_WORKSPACE}/.github/workflows/docs/extensions
-    - uses: actions/upload-artifact@v3
+    - uses: actions/upload-artifact@v4
       with:
         name: pytket-extension-docs
         path: .github/workflows/docs/extensions/